CN2565319Y - Office chair with folding back-rest - Google Patents

Abstract

The utility model provides a folding backrest type office chair which is composed of a foot rest body, a chair seat, pivoting blocks, a chair backrest and chair backrest supporting rods integrally. The utility model is characterized in that the chair backrest can be independently folded to be lower than the chair seat by using the pivoting and collocating structure that the pivoting blocks which are arranged among the bottom ends of two side rods and the chair seat are matched with the chair backrest supporting rods pivoted and combined between the chair backrest and the chair seat. Therefore, the height of the chair can be conveniently and rapidly lowered, and the utility model is placed in the space under a desk for improving the efficacy.

Description

Can roll over back of the body formula office chair

Technical field

The utility model relates to a kind of chair, is meant the collapsible office chair in a kind of its chair back position especially.

Technical background

The office chair of commonly using, known by popular, its general system by solid group be the seat support 10 of a fixed angle and bottom, the chair back 11 positions again group 13 structures of foot rest of establishing the some defeated bodies 12 of a tool form (as shown in Figure 1, 2), this kind commonly used office chair and extensively is being used middle discovery, and there is following scarce fraud in it and remains improvement:

As shown in Figure 1, to be provided with the office chair of handrail 14, the height of its handrail 14 tends to be higher than desk 15 drawers 16 bottoms, make office chair can't place into desk 15 belows at all, the personnel that cause come in and go out through out-of-date obstruction difficulty, and more are unfavorable for the mobile to abdicate the space of chair tool in cleaning;

As shown in Figure 2, not to be provided with the office chair of handrail, though it can place A desk 15 belows because of armless block resistance makes its seat support 10 positions, but the height of its chair back 11 generally also is higher than the desktop of desk 15, the shortcoming that causes its whole chair tool still can't place fully has a fly in the ointment in fact.

Therefore, how at the above-mentioned scarce fraud of commonly using, research and develop a kind of office chair structure that has more desirable practicality, real user looks forward to, and also is that relevant dealer makes great efforts to develop the target and the direction of breakthrough.

Summary of the invention

Main purpose of the present utility model, be that a kind of back of the body formula office chair of rolling over will be provided, it mainly is the chair back position that makes this office chair, by set pivot joint block structure between its two side levers bottom and seat support, cooperate the chair back pole of institute's pivot group between the chair back and seat support, utilize such pivot configuration set structure, and allow this chair back can independently fold the low seat support position that is bordering on toward the place ahead, take this special structure-improved, can reach the practical effect and the purpose that conveniently place in the desk below.

The purpose of this utility model is achieved in that

A kind of back of the body formula office chair of rolling over is characterized in that including:

One foot rest body, by the wheel seat that lands and be mounted on its central authorities upright to bolster and be mounted on the rotatable bolster body in this bolster top and constituted;

One seat support is mounted on this bolster body top and rotatable, and its two bogie side frame bars that have central authorities and appropriate location, inclined to one side rear are preset with first articulated section and second articulated section respectively;

Two pivot joint blocks, distolateral thereafter tool pivoted hole is to utilize the relative pivot group of key in first articulated section of this both sides hack lever of this seat support, and the central tool seat groove of this pivot joint block just can wrap the bogie side frame bar bottom side that is against this seat support, and the front of this pivot joint block also is preset with pivoted hole;

One chair back, forward are mounted on this seat support top and make its top slightly tilting towards the rear and form a horizontal rod position, and its two side lever bottoms that have utilize the relative pivot group of key in the set pivoted hole of the front of this pivot joint block;

Two chair back poles are to be one " ㄩ " word shape to be mounted between this chair back and this seat support, and its two top system utilizes key pivot group in this chair back side lever predeterminated position, its bottom end side then nationality this fasten body pivot group in this set second articulated section of seat support bogie side frame bar;

One back cushion is an elastic pad, and it stands and places this seat support back side top to group, and its dorsal part just reliably is butted on the horizontal rod of this chair back;

The final assembly relation of the office chair of being made up of above structure is: its chair back position can fold the low seat support that is bordering on toward the place ahead.

Good effect of the present utility model is:

Because the chair back of the present utility model position, by set pivot joint block structure between its two side levers bottom and seat support, the chair back pole that cooperates institute's pivot group between the chair back and seat support, utilize such pivot configuration set structure, and allow this chair back can independently fold the low seat support position that is bordering on toward the place ahead, take this special structure-improved, can reach the practical effect and the purpose that conveniently place in the desk below.

Description of drawings

Fig. 1 commonly uses the enforcement view of chair;

Another commonly uses the enforcement view of chair Fig. 2;

Fig. 3 combination stereogram of the present utility model;

Fig. 4 exploded stereogram of the present utility model;

Fig. 5 plane of the present utility model side-looking and enforcement illustrative view one thereof;

Fig. 6 holds finishing of Fig. 5 and places view; Piece number explanation: commonly use partly

Seat support 10 chair back 11 wheel bodys 12

Foot rest 13 handrails 14 desks 15

Drawer 16 the utility model partly

Foot rest body 20 wheel seats 21 bolsters 22

Bolster body 23

Seat support 30 bogie side frame bars 31 first articulated sections 32

Second articulated section 33

Pivot joint block 40 pivoted holes 41 are fastened body 42

Seat groove 43 pivoted holes 44

The chair back 50 horizontal rod 501 side levers 51

Key 52

Chair back pole 60 keys 61,62

Back cushion 70

The specific embodimentAt first, see shown in Fig. 3,4,5 that a kind of structure system of rolling over the office chair of back of the body formula of the present utility model comprises:

One foot rest body 20 be by the wheel seat 21 that lands and be mounted on its central authorities upright to bolster 22 and be mounted on these bolster 22 tops 23 structures of rotatable bolster body and form:

One seat support 30 is to be mounted on bolster body 23 tops and to be rotatable, and its two bogie side frames bar, 31 central authorities and appropriate location, inclined to one side rear are preset with first articulated section 32 and second articulated section 33 respectively;

The distolateral thereafter tool pivoted hole 41 of two pivot joint blocks 40 just can wrap bogie side frame bar 31 bottom sides that are against seat support 30 to utilize all 42 relative pivot groups in the central tool seat groove 43 of first articulated section of seat support 30 both sides hack levers 31,32 these pivot joint blocks 30, and the front of pivot joint block 40 also is preset with pivoted hole 44;

One chair back 50 is fastened to being mounted on seat support 30 tops and making its top slightly tilting towards the rear and form a horizontal rod 501 positions, and its 51 ends of two side levers utilize key 52 relative pivot groups in the set pivoted hole 44 of the front of pivot joint block 40;

One chair back pole 60 is to be one " ㄩ " word shape to be mounted between the chair back 50 and the seat support 30, and its two top system utilizes key 61 pivot groups in chair back side lever 51 predeterminated positions, its bottom end side then mat key 62 pivot groups in seat support 30 bogie side frame bars 31 set second articulated sections 33;

One back cushion 70 is an elastic pad, and it stands and places seat support 30 back side top to group, and its dorsal part just reliably is butted on the horizontal rod 501 of the chair back 50.

Cooperate and consult shown in Fig. 5,6, structure-improved design of the present utility model, these chair back 50 positions can its chair back pole 60 pivot groups be the circumflex branch point in all 62 of seat support 30 second articulated sections 33, cooperate the pivot joint block 40 of 32 of pivot groups to revolve simultaneously and move start in these chair back 50 bottoms and seat support 30 first articulated sections, impel the chair back 50 positions can be folded down toward the place ahead separately to fold and be the low state that is bordering on seat support 30 end faces, so that can make things convenient for the height that promptly reduces the chair tool, it can be slipped into fully the following side space (as shown in Figure 6) that places in desk 15; And as shown in Figure 7, if the desktop of desk 15 below group is provided with drawer 16, then office chair can be turned to make its position, higher chair back 50 top push desk 15 belows toward the outer side again and can reach the purpose that places fully equally.

Claims (1)

1, a kind of back of the body formula office chair of rolling over is characterized in that including:

One foot rest body, by the wheel seat that lands and be mounted on its central authorities upright to bolster and be mounted on the rotatable bolster body in this bolster top and constituted;

One seat support is mounted on this bolster body top and rotatable, and its two bogie side frame bars that have central authorities and appropriate location, inclined to one side rear are preset with first articulated section and second articulated section respectively;

Two pivot joint blocks, distolateral thereafter tool pivoted hole is to utilize the relative pivot group of key in first articulated section of this both sides hack lever of this seat support, and the central tool seat groove of this pivot joint block just can wrap the bogie side frame bar bottom side that is against this seat support, and the front of this pivot joint block also is preset with pivoted hole;

One chair back, forward are mounted on this seat support top and make its top slightly tilting towards the rear and form a horizontal rod position, and its two side lever bottoms that have utilize the relative pivot group of key in the set pivoted hole of the front of this pivot joint block;

Two chair back poles are to be one " ㄩ " word shape to be mounted between this chair back and this seat support, and its two top system utilizes key pivot group in this chair back side lever predeterminated position, its bottom end side then nationality this fasten body pivot group in this set second articulated section of seat support bogie side frame bar;

One back cushion is an elastic pad, and it stands and places this seat support back side top to group, and its dorsal part just reliably is butted on the horizontal rod of this chair back;

The final assembly relation of the office chair of being made up of above structure is: its chair back position can fold the low seat support that is bordering on toward the place ahead.

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